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2 Sheets-Sheet 1.

mo Model.)

J. W. GRANT'LAND. GONDUIT RAILWAY CONDUCTOR.

'Patent-ed 001:I 31, 1893.

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MTA/5.9955.' M //l.

(No Model.) 2 Sheets-Sheet 2.

J. W. GRANT'LAND. CONDUIT RAILWAY CONDUCTOR.

. 10,507,306 Patented oct. 31, 189s.

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UNITEDA SIATESg PATENT OFFICE.

JOHN W. GRANTLAND, OF PHILADELPHIA, PENNSYLVANIA', ASSIGNOR TO GILBERTL. PARKER, OF SAME PLACE.

COND UIT RAI LWAY-CONDUCTO R.

SPECIFICATION forming part of Letters Patent No. 507,806, dated October31, 1893.

Application filed May 17, 1892. Serial No. 433,313. (No model.)

To all whom it may concern:

Be it known that I, JOHN W. GRANTLAND, a citizen of the United States,residing at the city of Philadelphia, in the county of Philadelphia andState of Pennsylvania, have invented certain new and usefulImprovementsin Electric Railways, of which the following is a specification.

The principal objects of my present invention are irst, to insure thepresence of acontinuous and uniform current throughout the entire lengthof a conduit for operating the motor of an electric railway car; second,to maintain one or more conductors for conveying the current throughaconduit or sub-way substantially dry and free from moisture, wherebyleakage of the current is obviated; third, to insure good electricalcontact between the conductor and its complemental trolley, sled orbrush; and fourth, to prevent the oscillations of the car being impartedto the trolley-arm.

My invention consists of the improvements hereinafter described andclaimed.

The nature and general characteristic features of the invention will bemore fully understood from the following description taken in connectionwith the accompanying drawings forming part hereof, and in Which- Figurel, is a transverse section of an electric conductor embodying featuresof my invention and adapted foruse in electric railways. Fig. 2, is aside elevation of the same. Figs. 3 and 4, are respectively views insection and in side elevation of a modification of the conductorillustrated in Figs. l and 2. Fig. 5, is a transverse section of atrolley-arm embodying features of my invention, showing means foraffording the trolley or sled a range of play. Fig. 6, is a sideelevation of the trolley-arm illustrated in Fig. 5. Fig. 7 is atransverse section of a subway or conduit embodying features of myinvention and showing means for preventing undue motion of thetrolley-arm. Fig. 8,is a transverse section of a modified form ofconduit showing a metallic return conductor and a trolley-arm providedwith Vtwo sleds, brushes or trolley-wheels; and I, Fig. 9, is adiagrammatic view representing means for forcing a heating mediumthrough is supported in the conduit c, to one side of the slot a.

d, Figs. 1 and 2, is a covering of asbestus or other preferred materialapplied to the upper portion of the conductor c, and retained to placeby means of spring clips d. However, the spring clips d', may be omittedand the covering cl2, secured to place by extending it more than halfway around the conductor c, as shown in Figs. 3 and 4. In either casethe covering d, protects the upper surface of the conductor againstmoisture and affords an exposed surface at the bottom of the conductoralong which the trolley wheel, sled or brush c, may travel.`

d3, are drip grooves cut or otherwise formed in the edges of thecovering d', in order to deiect moisture from the exposed surface of theconductor. One of these conductors c may be suspended from the top ofthe conduit by means of the hangers c2, as shown in Fig. 7. Under suchcircumstances the conductor c, is connected with the line wire f, of aground return circuit by means of feeders f', and a heated medium as hotair, is drawn or otherwise forced through the conductor c, so that theexposed lower surface of the conductor .-j

accommodates a brush, sled 'or trolley that s i its complemental hangersupon each side of the slot ct. A stream or blast of a heating medium iscaused to traverse both of these conductors by means of a blowinglengine A, 1 insulated from the conductors and this meroo dium is heatedby means of furnaces B, l0- cated at suitable distances apart along theline of the railway. One of these conductors is connected through theintervention of suitable feeders 3, with the line wire 1, and the otherconductoris connected in asimilar manner with the return wire 2, so thatthese two conductors lead off from the respective poles of a dynamo orother generator and when connected, as through the motor of a carorother vehicle, constitute a metallic circuit. Of course the wires land 2 and their complemental feeders 3, may be dispensed with and insuch case the conductors are connected at one of their respectiveextremities directly with the terminals of the dynamo 0,01' other sourceof electric energy and at the other of their respective extremities areproperly insulated from each other. When one conductor c, is employedthe current is taken ed therefrom and delivered to the terminal of themotor of the caror other vehicle by means of a single trolley-wheel,sled or brush e, (Fig. 7 it being understood that the other terminal ofthe motor is connected to earth through a wheel of the car or in anypreferred, convenient or suitable manner. When two conductors areemployed as illustrated in Fig. 8, the current is taken ed from one ofthem and delivered to one of the terminals of the motor h of the car orother vehicle by means of a trolley- Wheel, sled or brush, and thecurrent after having traversed the motor is delivered to the otherconductor by means of another trolleywheel, sled or brush, and both ofthese trolley-wheels, sleds or brushes may be carried by a singletrolley-arm. g and g', are rollers journaled to each side of the shankof the trolley-arm and adapted respectively to ride i upon oppositefaces of the lips b', of the conduit. These rollers g and g', serve toprevent undue end-play of the trolley-arm and thus insure the successfuloperation thereof.

In practice it frequently happens that the conductors c, are notperfectly straight, so that it is necessary to provide means foraffording the trolley-wheel, sled or brush a slight range of play, sothat it may remain at all times in contact with the conductor c. Thisresult is accomplished according to my invention by providing a slottedconnection fm, between the axis of the trolley wheel, sled or brush andthe trolley-arm, and eniploying springs s, for maintaining thetrolleywheel, sled or brush normally in contact with the conductor; itbeing understood that the springs s, by yielding permit the trolley-arm,wheel or sled to run over irregular or curved portions of the conductorwithout breaking contact therewith. The upper extremity of l trolley-armis connected with the frame-work t' of the car or other vehicle by meansof a; therein and having a covering applied to a sleeve n, and springs', so that the car or other portion thereof, means for passing aheating vehicle is afforded a range of movement independently of thetrolley-arm.

It will be obvious to those skilled in the art to which my inventionappertains that various modifications as to construction and arrangementof parts of the present system may be readily made without departingfrom the spirit of my invention, and hence I do not limit myself to anyparticular construction or to any particular arrangement of the parts insuch system as has been hereinbefore explained; but

Having thus described the nature and objects of my invention, what Iclaim as new, and desire to secure by Letters Patent, is-

l. In an electric railway, a hollow conductor provided with a partialcovering of insulating material and means for supplying a heating mediumto the conductor, substantially as and for the purposes set forth.

2. In an electric railway, ahollow conductor provided with a coveringextending partially around the same, means for securing the coveringthereto and means for supplying a heating medium to the conductor,substantially as and for the purposes set forth.

3. In an electric railway, a hollow conductor provided with a coveringpartially surrounding the same and means for passing a heating mediumthrough said conductor, substantially as and for the purposes set forth.

4. In an electric railway, a hollow conductor provided with aninsulating covering clipped thereto and means for passing a heatingmedium through the conductor to maintain the same in a dry state orcondition, substantially as and for the purposes set forth.

5. In an electric railway, a hollow conductor with an exterior coveringpartially surrounding the same, means, substantially as described, forsupplying a heating medium to the interior of the conductor, appliancesfor maintaining said conductor throughout the length thereof in a heatedcondition a line wire and its complemental connections, and feedersconnected with said wire and conductor, substantially as and for thepurposes set forth.

6. In an electric railway, a hollow conductor, means for passing aheating medium through the conductor, and a covering applied to aportion of the surface of the conductor and provided with drip groovesor notches, substantially as and for the purposes set forth.

7. In an electric railway, a hollow conductor, means for supplyingaheating medium to the interior of the conductor, and a covering appliedto a portion of the surface of the conductor and provided with means toprevent moisture or fluids coming in contact with the exposed and heatedsurface of the conductor, substantially as and for the purposes setforth.

8. In an electric railway, a sub-way or slotted conduit, a hollowconductor supported medium through the conductor to dissipate moistureon or about the same, appliances IOC IIC

for maintaining said medium in a normal condition throughout theconductor, electrical feeders connected with said conductor and a car orvehioleprovided with means, substantially as described, adapted to bemaintained in Contact with said conductor, substantially as and for thepurposes set forth.

In testimony whereof I have hereunto set my signature in the presence oftwo subscribing Witnesses.

JOHN W. GRANTLAND. Witnesses:

e THOMAS M. SMITH,

RICHARD C. MAXWELL.

